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Activation of peroxymonosulfate by sp(2)-hybridized microalgae-derived carbon for ciprofloxacin degradation: Importance of pyrolysis temperature
Zou, Yubin; Li, Wentao; Yang, Lian; Xiao, Feng; An, Guangyu; Wang, Yue; Wang, Dongsheng
2019-08-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume370Pages:1286-1297
AbstractMicroalgae can be harmful to natural water in a variety of ways, and how to deal with this problem has received much attention. Magnetic nitrogen-doped microalgae-derived carbon (Fe-N@MC) was successfully prepared by pyrolysis under different temperatures. The sp(2)-hybridized carbon and C=O bond structure were strongly dependent on the pyrolysis temperature, and Fe-N@MC500 had a higher ratio of sp(2) -hybridized carbon than other counterparts. The surface morphology and structure analysis indicated that the Fe3O4 was successfully anchored into the carbon layer for magnetic separation. Ciprofloxacin (CIP) was selected as the indicator to test the catalytic performance. In the presence of peroxymonosulfate (PMS), the degradation efficiencies of nano-Fe3O4, N@MC500 and Fe-N@MC500 for CIP were 46.8%, 79.8% and 92.6% within 120 min. Under different reaction conditions (PMS dosage, pH, temperature), Fe-N@MC500 composite was shown to have superior efficiency and stability. Radical quenching experiments and electron spin resonance (ESR) indicated that singlet oxygen (O-1(2)) was dominant in the reaction supplemented by( center dot)OH and SO4 center dot-. It is believed that PMS could work as both acceptor and donor for efficient activation by sp(2)-hybird carbon structure and C=O bond. This study successfully provides a feasible method for the synthesis of recycled Fe-N@MC with microalgae as a renewable carbon feedstock to deal with antibiotics.
Department环境水质学国家重点实验室
KeywordMicroalgae-derived carbon Activation of peroxymonosulfate Nonradical mechanism Magnetic separation
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/42620
Collection环境水质学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.North China Elect Power Univ, Sch Renewable Energy, Beijing 102206, Peoples R China
Recommended Citation
GB/T 7714
Zou, Yubin,Li, Wentao,Yang, Lian,et al. Activation of peroxymonosulfate by sp(2)-hybridized microalgae-derived carbon for ciprofloxacin degradation: Importance of pyrolysis temperature[J]. CHEMICAL ENGINEERING JOURNAL,2019,370:1286-1297.
APA Zou, Yubin.,Li, Wentao.,Yang, Lian.,Xiao, Feng.,An, Guangyu.,...&Wang, Dongsheng.(2019).Activation of peroxymonosulfate by sp(2)-hybridized microalgae-derived carbon for ciprofloxacin degradation: Importance of pyrolysis temperature.CHEMICAL ENGINEERING JOURNAL,370,1286-1297.
MLA Zou, Yubin,et al."Activation of peroxymonosulfate by sp(2)-hybridized microalgae-derived carbon for ciprofloxacin degradation: Importance of pyrolysis temperature".CHEMICAL ENGINEERING JOURNAL 370(2019):1286-1297.
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